Shaft-packing.



B! LJUNGSTRUM.

SHAFT PACKING." APPLICATION FILED MAR. s, 1911.

Ratented Nov. 21, 1911."

I l/ aw 3 k y mm'ssgs: I m

B. LJUNGSTR'O'M.

SHAFT PACKING. APPLICATION FILED MAR,6, 1911.

Patented N 0v. 21, 1911.

2 SHEETSSHEBT w/mzssss Q? mum 5- f 5 "mm-r.

UNrran STATES- PATENT OFFICE;

mean LJUNGs'rnoM, or scroexnonm, swnnnmnssrenon To'AKmEBoLaGE'r Laur e.

s'rno vrs nne'ruanm, or s'rocxgiorm, SWEDEN.

citizen of Sweden, residing at 18? Grefmagnigatan, Stockholm, inthe King dom of- Sweden, haveinvented new and use-- ful Improvements in: Shaft-Packings, of

which the following is a specification.

My invention is designed tocontrol andv carry away the steam or other motive fluid escaping through the shaft packings of turbines, pumps, compressors and the like, so"

as to preventthe escape of such fluids into the engine roo 5 It comprises the com jiation of asuitable packing with means wiieby such fluid as escapes through the packing is subject to' the resistance-of and must escape through a contractedinlet to a discharge passage into whichair may be drawn by the suction thus 0 ing; Fig. 4 is an enlarged view of shown in Fig. 1 forming an imector; F g 5 is an enlarged View of parts shown 1n Fig.

between the shaft a and ring 6 created. In the accompanying drawmgs, which illustrate several forms .of my invention,

Figure 1 is a longitudinal sectional 'eleva-' 5 tion of parts of a turbine shaft and easing having my improvements applied thereto; Fig. 2 is a similar-view showing a different form of packing; Fig. 3 is a sectional view oiapparatus-having a further form of paclz- 2 forming an injector; and Fig. 6 is a longitudinal sectional view of an unpacked shaftand surrounding parts.

As shown in Figs. *1 and 4, the shafta and easing e have thereon complementary flanged rings 1) and 01 forming a tortuous passage-toprevent, as far as possible, the

0 escape of steam. A ring Z is carried by the casing vc, forming therewith a chamber 6, which surrounds the shaft 1;, a passage 9 being packed in an. usual manner or left unpacked as 4'5 may e desired. The inner ed e- Z of the ring land the adjacent inner ange b" on. a packing ring I) are beveled to form an 1 outlet for the passage into the contrac ed sane-manna.

i Specification of Lettersfatent. l I Application filed March 6,1911. Sefial -No. 612,440.

. the packing consists of'the para Patented Now-.21, 1911.

I inlet the-chambers, through which steam escapes from the tortuous passage formed by the rings 1) and d. A cpipe f is ponnectfi with the chamber e an leads,,-s uitably, to the outer air. x

In operation, steam escaping the packing is delivered to the chamber e by way of the contracted inlet thereof, whereby suction is effected upon the channelg and there is no escape of fluid thercthrough, the lines of force of the currents being'lm dicated. by the lined. v In the apparatus-shown in Fi ..-2 and"5, 1%: rings and d" fixed respectively to the shaft aand turbine casing c. A'ring Z" is fixed to the casing c and forms a channel's. e caping from the packing into the channel e creates suction through the passage formed by the exterior ring I)" and the adjacent part of the ring Z.

Steam at;

In Fig. '3, the passage between the turbine casing c and shaft 11 is shown packed withv graphite h. Steam escaping" past this pack- --1ng is'delivered to the chamber 0 through .the'cont-racted inlet .thereto which creates suction through the-passage ggbetween the "i5 shaft 0, and. the ring 1"" providing the chambere 1 .s.,

In Fig. 6 is shown a shaft a revoluble within the casing 0 to which is fixed the ring Having described my invention,-I c1ai' n;;;

5" form-ingthe chamber 6. Steam escaping 38.01 between the shaft (1 and casing a ,into the l. A casing, a shaft mqvabletherein, and ,85

a chamber havinga contracted inlet through which fluid escaping between saldyshaft and.

casing is delivered to -said chamber. I 2. In combination witha-shaft' -packing'- means, a passage having'a contracted sec- .99

tion connected with said mean5,.ai 1da--passage leading from the atmospher to 'said contracted section. r 3. The combination .ojf 'a 'sha-fhacasing iriwhich said shaft ifioumn, viding a chamber surrounding .saldt shaft,

said shaft and means in Which-suction is said chamber having a eqntr acted inlet" cnm- I name to this specification in the presence of n'lu nicatmg Withithe space between said i two subscribing witnesses. shaft and caslng, and a passage between: BIRGER LJUNGSTROBL created by fluid flowing through said inlet Witnesses: I to said chamber. }I-\RRY ARLIELEN,

"In" testimony whereof I have signed my HEDIM} 'MELI DER. 

